The presence of lymphocytes in long term cultures of newborn mouse thymic epithelium.
D000818:Animals; D000831:Animals, Newborn; D046508:Culture Techniques; D004848:Epithelium; D008214:Lymphocytes; D051379:Mice; D008858:Microscopy, Phase-Contrast; D013950:Thymus Gland / Q000166:cytology*